AccuRender nXt

advanced rendering for AutoCAD

I want to create multiple materials with different bump maps, so that they can be assigned to the objects in AutoCAD for rendering. Please see the attachment for an idea. The idea is to assign the appropriate one to the object for rendering.

If this can be achieved, it will avoid a whole lot of symbol creation, since right now to get the design etching, we are creating individual symbols for each design. Obviously this is very time consuming and results in literally thousands of DWG files, one for each design and size.

Is this possible at all? If so, how can this be done? Any help is much appreciated.

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I think that for that type is better to use displacement map. Displacement actually modifies the geometry rather then just fake the relief.

Thanks for replying George.

I tried a displacement map, but I am having serious trouble getting the map to sit right. Is there any example for nXtRender anywhere that I can follow? Will one single material with a displacement map work immaterial of the object size, or should I create one material for each size?

How are the texture co-ordinates related to the displacement co-ordinates?

I would stay away from displacements for this-- they will impact performance way too much.

This is going to require a combination of mapping and materials to really work.  nXt can get the size of the bitmap from the material definition, that part is not a problem.  However, it cannot get the location and orientation.  That requires mapping, information which attaches directly to the object, not the material.  

You can set up some typical shutter sizes with mapping already attached (use the quick mapping option to do this.)  You will have to have models for each size of shutter with preattached mappings-- the rest you can do with materials of appropriate size.

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Windows 11

Does anyone know if there are any issues with updating to Windows 11 for either nXt or AR Studio on AutoCAD 2022?See More
yesterday
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"0296 is up-- includes New... options for light channels."
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Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"0295 is up, includes scale factor for preview image and stop after # passes.  Haven't gotten to New light channel option in Lights interface yet.  Check it out if you have a chance (no worries if not.)"
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Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Yeah-- I understand.  I just think you may find you have a similar problem in this new engine with trying to estimate how many passes will be good enough.   That can vary a lot. You're always going have some error, allocating…"
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Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"The problem is when I'm running several renders over a weekend. How will I know how much time to allocate to each one? I wouldn't want them to run for the same amount of time, as one may over-cook to no extra benefit, while another is…"
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Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"It's an easy feature to add, but I'm pretty sure with this new version you'll find a time constraint to be more reliable.  The rendering below is probably done already, with a noise filter, or close to it."
Jan 7

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